A trained observer acting under the superintendent of compasses is charged with this important work.
"Take these," he said, tossing the compasses to her.
After that they took his right hand, placed it on something, and told him to hold a pair of compasses to his left breast with the other hand and to repeat after someone who read aloud an oath of fidelity to the laws of the Order.
Landon, start taking accountability of dealers and compasses throughout the day.
4 shows the mounting of a Thomson card on its pivot, which in common with the pivots of most other compasses is made of brass, tipped with osmium-iridium, which although very hard can be sharply pointed and does not corrode.
The binnacles or pedestals for compasses are generally constructed of wood about 45 in.
A museum containing compasses of various types invented during the 19th century is attached to the Compass Observatory at Deptford.
These degrees were, when necessary, repeated along the stem by the employment of a pair of compasses till 80 degrees were marked off.
The superintendent, who is a naval officer, has to investigate the magnetic character of the ships, to point out the most suitable positions for the compasses when a ship is designed, and subsequently to keep himself informed of their behaviour from the tin g e of the ship's first trial.
The Chinese name for the compass is ting-nan-ching, or needle pointing to the south; and a distinguishing mark is fixed on the magnet's southern pole, as in European compasses upon the northern one."
In 1820 Peter Barlow reported to the Admiralty that half the compasses in the British Navy were mere lumber and ought to be destroyed.
Both compasses lit up as the next name on the list appeared.
The needles of the primitive compasses, being made of iron, would require frequent re-magnetization, and a " stone " for the purpose of " touching the needle " was therefore generally included in the navigator's outfit.
It is also more particularly applied to a mathematical instrument ("pair of compasses") for measuring or for describing a circle, and to the mariner's compass.
Local magnetic disturbance of the needle due to magnetic rocks is observed on land in all parts of the world, and in certain places extends to the land under the sea, affecting the compasses on board the ships passing over it.
All compasses are fitted with a gimbal ring to keep the bowl and card level under every circumstance of a ship's motion in a seaway, the ring being connected with the binnacle or pedestal by means of journals or knife edges.
Again, it appears that compasses of a primitive description, which can hardly be supposed to have been brought from Europe, were employed in the East Indies certainly as early as several years previous to the close of the 16th century.
We have already seen that the Chinese as late as the end of the 8th century made voyages with compasses on which but little reliance could be placed; and it may perhaps be assumed that the compasses early used in the East were mostly too imperfect to be of much assistance to navigators, and were therefore often dispensed with on customary routes.
The cross at the east continued even in British compasses till about 1700.
From this it would seem that the compasses used at that time by English mariners were of a very primitive description.
Poncelet, how all problems of the second order can be solved by aid of the straight-edge alone without the use of compasses, as soon as one circle is given on the drawing-paper.
Is so named from the alleged disturbance of the compasses of vessels passing within its sphere of influence.
The nationalistic conception is set forth: wisdom, created in the beginning, compasses heaven and earth seeking rest and finds at last its dwelling-place in Jerusalem (and so substantially 4th Maccabees); the height of 'sublimity is reached in Wisd.